While looking for some info on the TL06 series I came across these: Excellent OP Amp white paper. http://www.engj.ulst.ac.uk/sidk/resources/texas_op_amp.pdf Direct upgrade for the TL06x series so probably pretty on target for that chip too. http://www.technicalaudio.com/pdf/semi_IC/TI-TL031Series.pdf Cheers Ray